Open System
Arkadiusz JadczykThe personal Substack of Arkadiusz Jadczyk, PhD.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 27 | Founded | a year ago | Last Issue | 4 months ago |
| Active | |||||
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arkadiuszjadczyk.substack.comLatest Issues
Exterior algebra
Geometric algebra was not born in an ivory tower; it grew out of three very human lives, each marked by faith, doubt, and an almost mystical hunger for structure.
The quiet mystic: Grassmann
Hermann Grassmann was a provincial schoolte...
Kronecker generalized deltas and Levi-Civita epsilons
My last post “It’s all about permutations” was a complete failure. Really very bad. I copied, without much thinking, some formulas from “Mathematical Handbook For Scientists And Engineers“, Granino A. Korn and Theresa M. Korn, Dover 2000, a...
It's all about permutations
Permutations appear whenever “things are the same, but in a different order.” That simple idea hides a powerful engine that underlies physics, geometry, information, and even the notion of identity itself.
In quantum mechanics, identical p...
Biolocation
On Tuesday, December 23, Vlad Zhigalov (see e.g. here) had a talk at the “Temporology” seminar hosted at Omsk (Western Siberia). He spoke about “biolocation” (or “dowsing”, some people use “pendulum” instead) – experimental research and the...
Densities
On my math blog:
This post introduces “densities”. There is a very nice book, available on arxiv, by Sean M. Carroll: “<a href=”https://arxiv.org/abs/gr-qc/9712019” target=”_blank” rel=”noopener”>Lecture Notes on General Relativity</a>”....
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Authors
The writers behind this newsletter.
Mathematical/theoretical physicist, PhD. http://arkadiusz-jadczyk.org/
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